Domestic wastewater is potentially rich in nutrients and has
traditionally been used as an important source of fertilizers for
either agriculture or aquaculture in many developed and developing
countries (Edward, 2000; Jana, 1998; Jana and Jana, 2002).
Boyden and Rababah (1996) used a commercial hydroponic system
for the cultivation of lettuce, capsicum, corn and tomatoes in settled
primary domestic wastewater but no attempt has so far been
made to couple the processes of eco-reclamation of wastewater
with biological production of some economically important vegetables
and crops that will not only reduce the cost of wastewater
treatment process but also yield some revenues in the form of agricultural
crops. The beauty of this approach is due to the fact that
wastewater provides all the essential elements required for plant
growth, and the wastewater, in turn, is reclaimed by the removal
of excess nutrients through the bio-process of crop production.
The net outcome of this modified system is the reduction of fertilizer
cost for crop production as well as the cost of wastewater
treatment. As a result, a large number of eutrophic wetlands and
water bodies which remain unutilized can be exploited by farmers
for the cultivation of various economically important crops using
wastewater. Morin (1996) has provided different strategies for
the cultivation of commercial greenhouse crops in sewage water.
However, the probability of infection for a single ingestion event
of NFT (Nutrient Film Technique) in growing lettuce on primary
Domestic wastewater is potentially rich in nutrients and hastraditionally been used as an important source of fertilizers foreither agriculture or aquaculture in many developed and developingcountries (Edward, 2000; Jana, 1998; Jana and Jana, 2002).Boyden and Rababah (1996) used a commercial hydroponic systemfor the cultivation of lettuce, capsicum, corn and tomatoes in settledprimary domestic wastewater but no attempt has so far beenmade to couple the processes of eco-reclamation of wastewaterwith biological production of some economically important vegetablesand crops that will not only reduce the cost of wastewatertreatment process but also yield some revenues in the form of agriculturalcrops. The beauty of this approach is due to the fact thatwastewater provides all the essential elements required for plantgrowth, and the wastewater, in turn, is reclaimed by the removalof excess nutrients through the bio-process of crop production.The net outcome of this modified system is the reduction of fertilizercost for crop production as well as the cost of wastewatertreatment. As a result, a large number of eutrophic wetlands andwater bodies which remain unutilized can be exploited by farmersfor the cultivation of various economically important crops usingwastewater. Morin (1996) has provided different strategies forthe cultivation of commercial greenhouse crops in sewage water.However, the probability of infection for a single ingestion eventof NFT (Nutrient Film Technique) in growing lettuce on primary
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